Anirudh Ramanathan updated SPARK-23067:
    Issue Type: Bug  (was: Sub-task)
        Parent:     (was: SPARK-18278)

> Allow for easier debugging of the docker container
> --------------------------------------------------
>                 Key: SPARK-23067
>                 URL: https://issues.apache.org/jira/browse/SPARK-23067
>             Project: Spark
>          Issue Type: Bug
>          Components: Kubernetes
>    Affects Versions: 2.3.0
>            Reporter: Anirudh Ramanathan
>            Priority: Minor
> `docker run -it foxish/spark:v2.3.0 /bin/bash` fails because we don't accept 
> any command except (driver, executor and init). Consider piping the unknown 
> commands through when they're unknown.
> It is still possible to do something like:
> `docker run -it --entrypoint=/bin/bash foxish/spark:v2.3.0` now for debugging 
> but it's common to try and run a different command as specified above. Also 
> consider documenting how to debug/inspect the docker images.
> [~vanzin] [~kimoonkim]

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